If you'll do some looking, you should be able to find a good used bass boat for sale this time of year. If you were going to stay in shallow water, you could get by with a flatbottom. Deep water means you might want to get something a little heavier.
How big a lake and how rough the water are a few of the factors you need to consider. Also how many people will be in the boat at a time. Write down everything you want it to do & how much money you want to spend. Go online and check what you can get in that price range. Understand a lot of these prices are negotiable.
Be sure to get it checked out by a reliable mechanic before you buy it. Do not take someone's word for it. Test drive it if possible. If there's a problem, it could wind up costing you a whole lot more money. Ask why they are getting rid of it, if they're having problems, you might want to keep looking.
A good boat mechanic can steer you clear of a lot of problems.